Irvine Welsh 
Victor Spoils (Storycuts) [EPUB ebook] 

On a post-clubbing Sunday morning, a series of misfortunes aggravate Sarah’s hangover. She must deal with last night’s insistent and overly attentive partner, a run-in with an old lover and, most jarringly, the re-emergence of a painfully disabling toothache. Part of the Storycuts series, this story was previously published in the collection Reheated Cabbage.